In the above image, The cleaned magnesium ribbon is about 34. cm long is burnt using a burner by holding it with a pair of tongs. And the ash so formed is collected in a watch-glass. The magnesium ribbon is kept away as far as possible from the eyes.
1What is the color of the powder collected in a watch glass?
2
Answers
Explanation:
1.Grey
2.Chemical change
3.Magnesium oxide
4.All of the above
5.False
According to the passage, the right answer to the following question is:
1) White (Option a) - Magnesium oxide is created when the magnesium strip is burnt by a burner. It has no odor and is white. As a result, the proper option is (a).
2) Chemical (Option b) - In the previous experiment, chemical change happens. The element undergoes oxidation, which is the addition of oxygen. Oxidation is a chemical reaction. As a result, the correct option is (b).
3) Magnesium oxide (Option c) - When magnesium burns, it reacts with oxygen, forming magnesium oxide. As a result, the proper option is (c)
4) All the preceding (Option d) - Changes in state, color, and temperature control the chemical reaction. As a result, the best choice is (d). In contrast to a change in physical form or a nuclear reaction, it is a process that involves the rearrangement of a substance's molecular structure.